Yes. And in northeast Ohio, we called them 'traffic circles'.
It seems that governments love these things for some stupid reason. They speak of the awesome effect of "traffic calming" that comes from the roundabout. A much better solution would be a huge cloverleaf interchange and 70 mph speed limits on all major arteries.
Stopping and starting wastes fuel. Slowing and accelerating wastes fuel. And both waste time.
They started in Europe. People that pushed them here had European Superiority Complex.